Don't flash MJ6 modem if you need AWS mod.
I just wanted to give out some advice to those that need the AWS mod to use your ATT S4 on Tmobile or another country carrier that uses AWS. You shouldn't flash the MJ6 modem as currently when attempting to restore the QNC file via QPST results with an error at 5% of flashing.
I'm not sure that is it possible to downgrade if you're on official MF3 but mostly likely you might with odin but this is just a piece of advice so you don't waste your time if you require AWS.
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